Electrochemical performance of compounds Ho6Fe23–xCox （x=0,1,3）
来源期刊：Journal of Rare Earths2011年第2期
论文作者：何维 赵允红 黄津梨 张永志 曾令民
文章页码：124 - 128
摘 要：Alloys with composition of Ho6Fe23–xCox （x=0,1,3） were prepared and examined by X-ray diffraction technique and automatic battery testing instrument.The compounds Ho6Fe23–xCox （x=0,1,3） crystallized in cubic Th6Mn23-type structure with space group Fm 3m （No.225）.The electrochemical properties of these alloys such as discharge capacity,cycling performance and high rate dischargeability were investigated by battery testing instruments in alkaline electrolyte.Substitution of small amounts of Co for Fe in Ho6Fe23–xCox improved the activation,discharge capacity and the high rate dischargeability.The alloy with x=3 （Ho6Fe20Co3） had better discharge capacity,HRD and plateau pressure at discharge current density of 150 mA/g.
何维1,2，赵允红1,2，黄津梨1,3，张永志1,2，曾令民1,2
1. Key Laboratory of Nonferrous Metal Materials and New Processing Technology of Ministry of Education,Guangxi University2. College of Materials Science and Engineering,Guangxi University3. Department of Physics and Electronic Information Science,Guangxi Teachers Education University
摘 要：Alloys with composition of Ho6Fe23–xCox （x=0,1,3） were prepared and examined by X-ray diffraction technique and automatic battery testing instrument.The compounds Ho6Fe23–xCox （x=0,1,3） crystallized in cubic Th6Mn23-type structure with space group Fm 3m （No.225）.The electrochemical properties of these alloys such as discharge capacity,cycling performance and high rate dischargeability were investigated by battery testing instruments in alkaline electrolyte.Substitution of small amounts of Co for Fe in Ho6Fe23–xCox improved the activation,discharge capacity and the high rate dischargeability.The alloy with x=3 （Ho6Fe20Co3） had better discharge capacity,HRD and plateau pressure at discharge current density of 150 mA/g.
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